Regulatory Capture

Regulatory capture is what happens when an agency created to police an industry comes instead to serve it. George Stigler's economic account treats this as a predictable outcome of incentives rather than corruption: the regulated industry is a small, concentrated group with an enormous stake in every rule, while the public bears the cost diffused across millions of people who have no reason to track a single agency's docket. Concentrated interests organise and lobby; diffuse ones rarely do. The Principal-Agent Problem supplies the rest of the mechanism — the agency is meant to act as the public's agent, but the industry it regulates is the party best positioned to supply the information, expertise, and staff the agency needs, and that asymmetry lets delegated authority drift toward whoever is easiest to consult.

The revolving door — regulators hired from the industry they oversee, and returning to it afterward — is capture's most visible symptom, but it is a symptom, not the whole mechanism; an agency staffed entirely by outsiders can still be captured through testimony, comment periods, and the sheer cost of building independent expertise from scratch.

The word is also overused. "Capture" can function as a Plausible Mechanism that ends an inquiry rather than starting one — any regulatory outcome an observer dislikes gets attributed to capture without tracing the actual channel, which slides toward a Motte and Bailey: the defensible claim, that industries have disproportionate influence over their regulators, stands in for the much larger one, that this specific rule proves capture occurred. Distinguishing real capture from ordinary Rent-Seeking, technical constraint, or a genuinely hard trade-off requires tracing who wrote the rule and who benefits, a Ground Truth question rather than a label to reach for.